Home TECHNOLOGY What Is An Algorithm? Definition And Examples

What Is An Algorithm? Definition And Examples

A calculation is a predefined strategy that tackles issues or errands in individual advances. While measures are found in almost every area of daily existence, they are pivotal in software engineering and association with PC programs. Notable models are the Google calculation, which decides the positioning of indexed lists, and the newsfeed calculations of Facebook or Instagram.

Algorithm: A Brief Definition

Calculations are predefined, limited successions of activities used to take care of an issue. They are utilized to perform explicit undertakings given a fixed series of steps or to change over input values into yield values. The endeavors are still up in the air and executed in an expected request. Calculations are likewise free of a particular language and capability naturally and non-consequently. Likewise, totals can be tracked down in arithmetic and software engineering as well as in daily existence – from traffic signals in rush hour gridlock to the call capability of a lift.

Six Characteristics That An Algorithm Must Have

Algorithms used to be defined vaguely, but today six properties indicate whether an algorithm is involved:


Each step in an algorithm’s sequence of actions must be practical and unambiguous. This means that each statement must make sense and be helpful to the application to get a result or an output value.


The actions and individual steps must be executable and, therefore, logical.


The goal of an algorithm is to convert input data into output data. This is only possible if the process is finite. Algorithms must therefore have a finite form, e.g. by a limited number of characters or a little memory requirement.


The executable, logical and finite individual steps must lead to output within a limited time frame. The sequence should be goal-oriented and not end in an endless loop without a result.


The same input under the same conditions must lead to the same output. This is the only way algorithms can guarantee that an application and problem solution works reliably.


In the algorithm’s sequence of steps, there is always only one way to continue solving the problem. Thus, the intermediate results clearly define subsequent steps and are not random.

What Is The Importance Of Algorithms?

Algorithms played a central role in mathematics and logic in the 19th and 20th centuries and were a popular topic of debate. Nowadays, algorithms can be found in almost every area of ​​our everyday life. The fascinating thing is that we usually don’t know anything about the algorithms that make specific applications possible, such as the assembly line at the checkout, navigation devices or the ranking of a search engine like Google. In computer science, algorithms form a central basis for programming.

If you want to learn to program, you will soon find that almost every program uses algorithms to carry out a task. Slightly simplified, it can even be said that every program is itself an algorithm. However, not every algorithm is a program because algorithms are independent of Internet programming languages. They can also be formulated in “natural” language, mapped in mathematical formulas or executed non-automatically. The term’s origin lies in the 8th century and is derived from the Khorezm polymath and mathematician al-Khwarizmi, abbreviated to Abu Ja ‘far Muhammad ibn Musa al-Khwarizmī.

Areas Of Application Of Algorithms

Algorithms are neither limited to languages ​​​​and methods nor specific areas of application. Since their use lies in problem-solving, they represent a particular course of action and procedure that works with different variables and sequences of steps. This can involve route calculation for navigation devices, recommendation systems in online shops, real-time advertising for the intelligent display of online advertising in real-time, as well as translator apps and computer simulations. Algorithms are becoming increasingly important, especially in ​​considerable data other than artificial intelligence (AI).

With digitization and the ubiquity of intelligent technologies such as smartphones, smartwatches and artificial intelligence in cars and smart homes, the amount of data generated is increasing to astronomical levels. This requires computers and servers with the appropriate computing power and algorithms that organize, evaluate, process or apply data volumes. An example of this is sensors in automated driving, which trigger specific vehicle actions based on the data collected. Mathematical computer algorithms also play a crucial role in creating climate simulations.

The functionality of search engines and pathfinding in computer science could also not be implemented without algorithms. Programs called crawlers are used to search, analyze and index web content: crawlers catalog and index data using the search engine algorithm. The ranking and findability of search results depend on optimal cataloging. Therefore, the search engine algorithm also serves as a guide for efficient optimization.

Concrete Examples Of Algorithms

New algorithms and practical applications are added every day. The following examples are intended to illustrate algorithms in practice:

Google Algorithm

When you type a search term or query into Google, it only takes a split second to get multiple search results pages. This is made possible by Google’s search engine algorithm. This lists results according to relevance, keywords, link structure, content readability, and security. However, exactly how the algorithm looks and works in detail is and remains one of the biggest trade secrets in the world.

Cooking Recipes

Even simple cooking recipes embody the basic principle of an algorithm. The ingredients can be understood as inputs that lead to the result in a specific and fixed sequence of actions. Cooking sites that make it possible to calculate the number of ingredients based on portions and people also use algorithms.

Body Mass Index

A person’s body fat percentage can be calculated using the body mass index. The body weight is set at the body height. The inputs are the current weight and size, and the output is the BMI. The BMI indicates whether a person is of average importance, underweight, overweight or obese.


The so-called application-specific integrated circuit can be understood as an algorithm built into the hardware. These are immutable circuits in hardware that perform a specific function. An example of this is graphics processors.

Data Mining

Data mining is also called search, collection, analysis, cataloging and indexing. Algorithms, artificial intelligence and machine learning, are used here.

Cryptocurrency Mining Algorithms

In crypto mining, transactions with cryptocurrencies are documented, verified and recorded in the blockchain. Here, crypto miners solve transaction-related algorithms that are reminiscent of number puzzles. Solving the puzzles is used to verify transactions.

Neural Networks

A neural network is an area of ​​deep learning. Deep learning algorithms are used here, which simulate and replicate the functions of the human brain. These can be used to use various functions such as language assistance, translation, protection against cyber attacks or text creation.

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